Phonocardiograph transducer Patent
Piezoelectric transducer for monitoring sound waves of physiological origin
Young, W. J.↗
Engineering topics
Young, W. J.
Publications and source records attributed to Young, W. J..
Phonocardiograph microphone is rugged and moistureproof
Microphone used as a phonocardiograph transducer monitors small amplitude audio signals in the presence of large shock loads and high humidity. It contains a lead zirconate-lead titanate piezoelectric plate encapsulated in a flexible polyurethane resin. The resin is contained in a sealed nylon case having a diameter of less than one inch.
Young, W. J.↗